The purpose of this CBR it to provide release notes for the recent Engine ECU software.
Mack technical service bulletin CBR-2591-1 202606 for 2025-2027 Mack Pioneer PR (4) and 2026-2027 Mack Anthem An (4).
- Bulletin number
- CBR-2591-1 202606
- Component
- Engine
- Summary
- The purpose of this CBR it to provide release notes for the recent Engine ECU software.
Vehicles covered
- Mack Pioneer PR (4) 2025-2027 202520262027
- Mack Anthem An (4) 2026-2027 20262027
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